Trevor Robinson created HDFS-3822:
-------------------------------------
Summary: TestWebHDFS fails intermittently with NullPointerException
Key: HDFS-3822
URL: https://issues.apache.org/jira/browse/HDFS-3822
Project: Hadoop HDFS
Issue Type: Bug
Components: test
Affects Versions: 2.2.0-alpha
Environment: Apache Maven 3.0.4
Maven home: /usr/share/maven
Java version: 1.6.0_24, vendor: Sun Microsystems Inc.
Java home: /usr/lib/jvm/java-6-openjdk-amd64/jre
Default locale: en_US, platform encoding: ISO-8859-1
OS name: "linux", version: "3.2.0-25-generic", arch: "amd64", family: "unix"
Reporter: Trevor Robinson
I've hit this test failure a few times in trunk:
{noformat}
Tests run: 2, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 58.835 sec <<<
FAILURE!
testNamenodeRestart(org.apache.hadoop.hdfs.web.TestWebHDFS) Time elapsed:
52.105 sec <<< FAILURE!
java.lang.AssertionError: There are 1 exception(s):
Exception 0:
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.RemoteException):
java.lang.NullPointerExcept
ion
at
org.apache.hadoop.hdfs.server.blockmanagement.BlocksMap.getBlockCollection(BlocksMap.java:101)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.getBlockCollection(BlockManager.java:2926)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.isValidBlock(FSNamesystem.java:4474)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.allocateBlock(FSNamesystem.java:2439)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2200)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:471)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtoco
lServerSideTranslatorPB.java:295)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMetho
d(ClientNamenodeProtocolProtos.java:43388)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:473)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:898)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1693)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1689)
{noformat}
It appears that {{close}} has been called on the {{BlocksMap}} before
{{getBlockCollection}}.
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